<!DOCTYPE html>
<html>
	<head>
		
		<title></title>
	</head>
	<body>
		<script>
			var i=100;
			i=parseInt(i);
			var sum=0;
			for(;i<=500;i++){
				
				sum=parseInt(sum);
				sum=sum+i;
			}
			document.write(sum);
		</script>
	</body>
</html>